The Best Windows & Doors in St. Catharine’s

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The Best Windows & Doors in St. Catharine’s

James Steers, Service Representative - Clera Windows + Doors

James Steers

Our local representative has been serving St. Catharines and surrounding areas for over 10 years!


Contact us for more information and about a free quote!

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Our Local Clera Branch Serves St. Catharines

As the manufacturers and installers of all our windows and doors, we stand behind our work.

James Steers, Service Representative - Clera Windows + Doors

James Steers

Our local representative has been serving St. Catharines and surrounding areas for over 10 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves St. Catharines

As the manufacturers and installers of all our windows and doors, we stand behind our work.

Clera Windows + Doors

St. Catharines

Toll Free: 1-844-738-7936
Phone: 1-844-738-7936
Fax: 905-738-0586


Clera Windows + Doors

Toll Free: 1-905-738-1870
Phone: 1-905-738-1870
Fax: 905-738-0586


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Best Windows And Doors - Clera Windows + Doors

Get over

$325 per Window

in FREE factory upgrades

With our wide range of ENERGY STAR products, you can be sure to save big on your next dream project!

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Limited Time Offer To Upgrade Your Home - Clera Windows + Doors

The Best Windows & Doors in St. Catharine’s

Founded in 1978, Clera Windows & Doors have been keeping the homes and businesses of St. Catharine’s safe and warm for nearly four decades. Our reputation has been built over all these years on our quality merchandise, exceptional customer service and environmental approach. Take advantage of our years of expertise and know-how, you will not find better doors and windows in St. Catharine’s.

St. Catharine’s is growing their tourism industry by becoming a part of the winery tours that happen around the Niagara region in the lower part of Ontario. Many local retail and service businesses are looking to revamp their storefronts to fit in with the friendly and quaint appearance that has been attracting tourists from near and far. As such, many leasehold renovations are being made in order to maintain that inviting atmosphere, including changing their windows and doors! At Clera, we have custom windows and doors available that will allow you to match the warm St. Catharine’s atmosphere while still standing out from your competition!

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We know only too well that what really matters to customers is quality, style, attention to detail, finish, value for money and environmental awareness. Clera has become known as ‘the people’s company’ because we listen to our customers and deliver on time, every time. Our products are all handmade in our own factory in Ontario and so confident are we in the quality of what we produce, that each unit is offered with a lifetime warranty. It doesn’t matter how old your windows and doors are, you will be entitled to a repair or a replacement part free of charge.

Having our own factory in Vaughn means close communication between our sales people and the manufacturing department. Your order will be processed exactly as specified, and without the need to ship across country or overseas, there is a very short turnaround time between order and delivery. Plus, with our own facilities, we have tight control over quality and price.

Customized Windows & Doors In Alliston - Clera Windows + Doors
Invest In Your Home Today - Clera Windows + Doors

Meet The Team At Clera Windows + Doors Niagara Falls, St. Catherine’s & surrounding areas

Video Transcript

My name is Todd Huson. I am the district manager for the Niagara region. I’ve been with Clera Windows + Doors for 21 years.

At Clera Windows + Doors, we manufacture our own windows and we install them with our own factory trained carpenters as opposed to a contractor who buys the window from a manufacturer and installs it. At that point, you basically get two separate independent warranties. But with Clera Windows + Doors, you have a warranty through the manufacturer on the product and the installation.

Number one, again, we are one-stop-shopping. We have a very high-quality product and we stand behind our warranty.

I’d like to take this opportunity to thank all my customers through the past 21 years for your support and to invite any new customers to feel free to call me for a free, non-commitment estimate.

Why Choose Clera

Why take a chance with other window or door companies that purchase their products from another supplier, only to resell them to you for a higher cost?

Clera Windows + Doors is one of Canada’s largest, oldest, most dependable and reputable vinyl window manufacturers in Ontario. We fully manage and take care of your door and window replacement project from start to finish, ensuring every stage of your window or door project meets our lofty standards of craftsmanship.

Why are we Ontario’s most awarded window and door company?

The Clera Care Guarantee Logo

Over 45 Years of Experience

With over 45 years of experience, we have earned a reputation as one of Canada's leading window and door manufacturers and installers.

Certified Technicians Icon

Certified Technicians

You can trust our team of factory trained technicians to install your new windows perfectly—our A+ BBB rating is no accident!

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Serving Ontario With over 40 Branches

We have over 40 branches across Ontario, which means that we're always close by when you need us.

Non-prorated Lifetime Warranty Icon

Non-prorated Lifetime Warranty

Whenever anything goes wrong with your windows, we'll take care of it for you—no questions asked.

Energy Star Icon

ENERGY STAR® Certified

Our hung windows meet Canada's strict energy-efficiency standards. A window from Clera is not only high-quality and durable, but also energy-efficient.

Reasons to Love
our Products

Clera Windows + Doors is a reputable vinyl window manufacturer in Ontario with a history of dependable and high-quality products. Our superior materials and cutting-edge technology ensure durability, energy efficiency, and style. We offer customizable styles and colors, as well as superior security features and noise reduction technology to provide the best possible product attributes for your home.

Our team manages every stage of your replacement project, from start to finish. We work closely with you to understand your specific needs and preferences, and use our extensive experience and knowledge to deliver a solution that exceeds your expectations. Trust Clera Windows + Doors for exceptional service and expertise for your home renovation needs.

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Energy Star Icon

Energy Star Approved

Effortless Operation Icon

Modern, Contemporary Design with more glass, and less frame

Better Home Security Icon

Better home security

Noise Reduction Icon

A quieter home; improved noise reduction from the outdoors

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No Maintenance Icon

No maintenance: vinyl windows are virtually maintenance-free

Pilkington Low-e Glass Technology Icon

Pilkington Low-E Glass Technology, engineered specifically for Canadian climates

Structural Integrity Icon

Wet-glazed frames and sashes on all windows; the ultimate in protection against water and wind infiltration, with added structural integrity

Improved Ventilation Icon

Triple-fin weatherstripping with built-in anti-microbial properties, meaning no mould and better air quality

Pure Virgin UPVC Icon

100% pure virgin UPVC, providing protection from fading

Exceptional Durability Icon

Stronger hardware and structural integrity thanks to integrating galvanized steel (allows for larger, more spectacular views!)

Best Vinyl‍ End Vent Slider Windows  - Clera Windows + Doors

St. Catharine’s Leading Replacement Windows & Doors

Replacement windows and doors in St. Catharine’s are not an insignificant cost, but Clera aims to offer you the very best value for money. Quality joinery will not only enhance the look of your home, it will also enhance its value. So make a real investment in your property and enjoy something that not only looks good but bumps your house up in price.

In addition, for many North American homes with cold winters, having quality windows will greatly help in reducing heating bills throughout the chilling season. For towns like St. Catharine’s who have a large university and college student population, having windows that insulate homes properly means lower utility bills for you and more satisfied tenants year after year.

Vinyl Windows & Doors - Clera Windows + Doors
Bay & Bow Windows - Clera Windows + Doors

Whatever you have set your heart on, Clera can produce it for you because all of our replacement windows and doors are made to order in our factory. We have a huge choice of styles and designs, combining the functional with the elegant. Choose Clera for your next project in St. Catharine’s, for your office building or your home.

Clera offers a selection of different types of glass, grilles and a wide variety of colour choices. If you can’t see the colour you want then we can personalise your order to exactly match your specifications.

The Clera website has a really useful feature which allows you to design your own look using a handy tool and just three simple steps. Pick glass, grille and colour and the technology will create the finished effect to help you decide which is right for your project. View our range of doors in St. Catharine’s which come in either stainless steel or fibreglass, a door for every purpose styled to suit your property. All this and amazing craftsmanship for which Clera is renowned and at unbeatable prices.

Vinyl Windows & Doors

Over the years, Clera has become convinced that the best form of material for both door and window frames is, surprisingly, vinyl, a superior choice over the more traditional wood. Vinyl is very robust and can survive a Canadian winter without looking shabby. Vinyl is smart looking, durable and available in a range of thicknesses so you will not be restricted when you commission your replacement doors or windows in St. Catharine’s.

The colour choices for vinyl are quite staggering, there are that many of them, but if you do want something wholly unique then we can personalise your grilles and frames. Our colours have a unique fade-resistant technology so your order will look as good in five or ten years time as the day it was installed. Vinyl is a tremendous insulator confirmed by its high R-value. It is easy to open, close and adjust as, despite its robustness, it is very lightweight. Low maintenance with a high energy rating, why would you not choose vinyl for your home project?

Our professional fitters follow the guidance of the Canadian Standards Association when we install your replacement windows and doors. Let Clera ramp up the curb appeal of your St. Catharine’s home whilst you enjoy insulated comfort, basking in the glow of lower heating costs and an increase in the value of your house.

Extensive Range Of Vinyl Windows - Clera Windows + Doors
Serving Aylmer For Over 40 Years - Clera Windows + Doors

Our sales specialists will be able to answer your questions about all the details of your new windows and doors in St. Catharine’s. We encourage any clients to ask us about our ratings and features of all our products, and all the options you have for custom ordered windows. If you need a customized window but want the process to be simple, our staff can easily walk you through the selection process in order to make your selection as easy as possible.

Our products come with lifetime guarantees which we service directly, and should you ever run into issues with your windows or doors in St. Catharinie’s, we also have a dedicated service line to help with emergency repairs.

For those looking to keep the process as fast and simple as possible, Clera has a catalogue of our selection, including double and single slider tilt, double and single hung tilt, end vent slider, awning, casement, and bay and bow windows, as well as fibreglass, sliding, and storm doors so you can make your choice without hassle.

Serving St. Catharine’s For Over 40 Years

Clera is a family business and has retained the same ethics of hard work and good value which still persist today in the company much as they did nearly 40 years ago. There isn’t much we don’t know about replacement windows and doors and we do know that you will be hard-pressed to beat the quality we can offer you at the Clera price. Because we can control the costs of manufacture, we are able to keep our prices competitive without compromising on quality. We do not buy in and sell on any other manufactured goods.

Enjoy the cosiness of a Clera winter with no stress as you can relax in the knowledge that your new windows and doors will look just as smart come springtime as when they were first fitted. Every piece we make is stress tested and fully inspected before it is allowed to leave our Ontario factory. Let Clera make your home beautiful. All our doors and windows in St. Catharine’s are Energy Star Certified. Clera is committed to the fight against global warming and is a responsible manufacturer.

Professional Installers - Clera Windows + Doors
Meet The Team - Clera Windows + Doors

Meet The Team at Clera Windows & Doors, St. Catharine’s

Enjoy the benefit of Clera’s experience and reputation, experts in the field since 1978. Take advantage of our huge variety of styles and designs with the option to make something totally unique with our tailor-made service. Our desire is to capture every aspect of your design project right down to the finest detail which is why we have such a reputation for excellent customer service.

Let Clera take the strain of your new windows and doors and relax secure in the knowledge that what we produce for you will be top quality, fully guaranteed and tick every environmental box. It’s all part of Clera’s great service.

Whether you’re looking to beautify your business or make your home more energy efficient, Clera Windows and Doors is your St. Catharine’s solution! Contact our team today and see for yourself just how easy it is to revamp your space.

Best Options For Your Replacement Doors And Windows - Clera Windows + Doors